You are right about the final torque.
Considering all these discussions we had about torque, weakness ...of the UN1, I made a search over the forum and see that there is no thread about the UN1 technicals.
I think it would be of great interest to have a technical approach of the UN1, having calculatons of all torque on every pinions, from input to wheels, to calculate the force necessary to mov a gt40, taking in consideration the usual forces such as CX, weight of the car, speed....basic newton physicals laws...
This would allow us to have a better understanding of the impacts and bounds of every modificatons or ways to improve the strength.
I have some ideas to share about a way to improve the rigidity of the 5th gear shaft in a budget.
I wil be away for few days and if such a thread is not opened at that time, I will try to open one.
Tim, I don't know of ways to remove float without having the steel hub machined with lower internal measures. If the gearbox is aligned correctly, the float won't be a problem, but if not , for sure it will broke. Even when new all these gearboxes had a float on the input shaft. I tried at the time to ask Renault why they did it this way, but I never got a real technical answer. As far as I know all UN1 have this input driveshaft float (I don't know for the Lotus one, if somebody knows, his knowledge is welcome)
BTW, the more details we could have from the lotus UN1 would be of great help. Looking at lotus forum, they say that the lotus UN1 is much more stronger than the original UN1. I would be interested to check where the differences are : having reference casting numbers for the housings, references stamped on the wheels and pinions...Renault is a big company and I don't imagine they did special productions for lotus (this is my personal conviction, I may be wrong...) as to maintain a spare inventory in conformity with their legal obligations just for few units is definitely not in the renault strategy.
Tim, I don't understand why you replaced the 6mm roll pin by a 5.6mm as the hole is for a 6mm. I think my "french understanding" of your message is not correct.
Thanks for posting
Cheers
Stephane